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Detailing your scope-of-work
Q. How should a garage slab be sloped for drainage toward the overhead door? At 1/4 inch per foot on a 24x26-foot foundation, the height difference from front to back would be more than 6 inches. Do I need to grade the sand and gravel sub-base at the same slope so the slab can have a uniform 4-inch...
A Colorado builder explains how he poured a new foundation well around the existing one to provide support and a smooth surface for waterproofing.
An engineer explains how wall thickness, rebar, and proper drainage all affect the ability of poured concrete foundation walls to resist lateral soil pressure.
Making sure of mortar types
Q: In New York state, we built a pergola (a type of garden trellis) using 8x8 pressure-treated posts set 4 feet into the ground. During the first winter, the frost lifted the posts. What should we have done to keep the posts from heaving?
A radon remediation contractor shows how to install vent pipes beneath a slab to carry radon harmlessly to the outdoors — all for a reasonable cost.
Use this shop-fabricated approach to concrete countertops to improve quality and cut installation time from days to hours.
Concrete expert Brent Anderson explains the code rules and structural issues surrounding foundation footings. Included are discussions of when and where to place rebar and what to do if a footing is poured slightly out of place.
Concrete seems about as straightforward and rugged as any material on site. But the fact is, if you make certain common mistakes during placement, you can end up with a weak finished product. Here are some essential guidelines that will guarantee good work.
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